PosterizeImageChannel 1864 Magick++/lib/Image.cpp   PosterizeImageChannel( image(), channel_, levels_,
PosterizeImageChannel 2294 magick/quantize.c   status=PosterizeImageChannel(image,DefaultChannels,levels,dither);
PosterizeImageChannel   63 magick/quantize.h   PosterizeImageChannel(Image *,const ChannelType,const size_t,